Furthermore, when the TMA was stained for two other neuroendocrine genes, SYP and ASCL1, there did not seem to be any strong correlation with INSM1 staining (Figures 3F, 3G), indicating that INSM1 may represent a novel neuroendocrine biomarker in SCLC. The gene discussed is INSM1; the disease is small cell lung carcinoma.